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Fluid mechanics problem

  1. May 2, 2012 #1
    1. The problem statement, all variables and given/known data

    A horizontal bend in a pipeline conveys water at a discharge at 1000l/s gradually reduces from 600mm to 300mm and deflects the flow through an angle of 60 degrees. At the larger end the pressure is 170000N/m^2. Determine the magnitude and direction of the force exerted on the bend.




    2. Relevant equations
    How can I find pressure2 (at point 2 300mm end)

    is my solution right to find pressure at point 2

    Please help as i need solution urgently. Thanks to all

    3. The attempt at a solution

    I have used moment to find internal force F=DENSITY * FLOW DISCHARGE (V2-V1)

    Than I have used the formula F=P/A to find the pressure.

    Q(FLOW DISCHARGE) =AV (AREA*VELOCITY)

    P.s if i find p2 i can use formula to find external forces on the bend using

    P1A1-P2A2COSTHETA -Fx= DENSITY*Q*(V2*COSTHETA-V1)

    Fy-P2A2SINTHETA= DENSITY*Q*(V2*SINTHETA)
     
  2. jcsd
  3. May 3, 2012 #2
    Hint: Bernoulli equation
     
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